Parameter Identification of Variable Flux Reluctance Machines Excited by Zero-Sequence Current Accounting for Inverter Nonlinearity

To identify the parameters of variable flux reluctance machines (VFRMs), the input voltage value is usually obtained from the reference voltage indirectly. However, the reference and actual voltages may be different due to the nonlinearity of the open winding inverter when using zero-sequence curren...

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Main Authors: Jiaqiang Guo, Xu Liu, Kaiyuan Lu, Ziqiang Zhu
Format: Article
Language:English
Published: MDPI AG 2022-12-01
Series:Energies
Subjects:
Online Access:https://www.mdpi.com/1996-1073/15/24/9287
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author Jiaqiang Guo
Xu Liu
Kaiyuan Lu
Ziqiang Zhu
author_facet Jiaqiang Guo
Xu Liu
Kaiyuan Lu
Ziqiang Zhu
author_sort Jiaqiang Guo
collection DOAJ
description To identify the parameters of variable flux reluctance machines (VFRMs), the input voltage value is usually obtained from the reference voltage indirectly. However, the reference and actual voltages may be different due to the nonlinearity of the open winding inverter when using zero-sequence current, leading to the inaccuracy of parameter identification. To solve this problem, this paper proposes an equivalent nonlinearity voltage error model of the open winding inverter to compensate for the input voltage of VFRM during the online parameter identification. Since in the proposed method the phase current direction is not required, the calculation time can be reduced. Moreover, in the developed parameter identification model of VFRM the derived equivalent nonlinear voltage error is used to correct the input of the identification model so as to improve the accuracy of parameters. Finally, the experimental results on the prototype VFRM are presented for verification.
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spelling doaj.art-70e56046dcf04b83a5b1800e08a4a5f12023-11-24T14:34:10ZengMDPI AGEnergies1996-10732022-12-011524928710.3390/en15249287Parameter Identification of Variable Flux Reluctance Machines Excited by Zero-Sequence Current Accounting for Inverter NonlinearityJiaqiang Guo0Xu Liu1Kaiyuan Lu2Ziqiang Zhu3State Key Laboratory of Reliability and Intelligence of Electrical Equipment, Hebei University of Technology, Tianjin 300130, ChinaState Key Laboratory of Reliability and Intelligence of Electrical Equipment, Hebei University of Technology, Tianjin 300130, ChinaDepartment of Energy Technology, Aalborg University, 9220 Aalborg, DenmarkDepartment of Electrical and Electronics Engineering, University of Sheffield, Sheffield S10 2TN, UKTo identify the parameters of variable flux reluctance machines (VFRMs), the input voltage value is usually obtained from the reference voltage indirectly. However, the reference and actual voltages may be different due to the nonlinearity of the open winding inverter when using zero-sequence current, leading to the inaccuracy of parameter identification. To solve this problem, this paper proposes an equivalent nonlinearity voltage error model of the open winding inverter to compensate for the input voltage of VFRM during the online parameter identification. Since in the proposed method the phase current direction is not required, the calculation time can be reduced. Moreover, in the developed parameter identification model of VFRM the derived equivalent nonlinear voltage error is used to correct the input of the identification model so as to improve the accuracy of parameters. Finally, the experimental results on the prototype VFRM are presented for verification.https://www.mdpi.com/1996-1073/15/24/9287inverter nonlinearityopen windingparameter identificationvariable flux reluctance machineszero-sequence current
spellingShingle Jiaqiang Guo
Xu Liu
Kaiyuan Lu
Ziqiang Zhu
Parameter Identification of Variable Flux Reluctance Machines Excited by Zero-Sequence Current Accounting for Inverter Nonlinearity
Energies
inverter nonlinearity
open winding
parameter identification
variable flux reluctance machines
zero-sequence current
title Parameter Identification of Variable Flux Reluctance Machines Excited by Zero-Sequence Current Accounting for Inverter Nonlinearity
title_full Parameter Identification of Variable Flux Reluctance Machines Excited by Zero-Sequence Current Accounting for Inverter Nonlinearity
title_fullStr Parameter Identification of Variable Flux Reluctance Machines Excited by Zero-Sequence Current Accounting for Inverter Nonlinearity
title_full_unstemmed Parameter Identification of Variable Flux Reluctance Machines Excited by Zero-Sequence Current Accounting for Inverter Nonlinearity
title_short Parameter Identification of Variable Flux Reluctance Machines Excited by Zero-Sequence Current Accounting for Inverter Nonlinearity
title_sort parameter identification of variable flux reluctance machines excited by zero sequence current accounting for inverter nonlinearity
topic inverter nonlinearity
open winding
parameter identification
variable flux reluctance machines
zero-sequence current
url https://www.mdpi.com/1996-1073/15/24/9287
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AT kaiyuanlu parameteridentificationofvariablefluxreluctancemachinesexcitedbyzerosequencecurrentaccountingforinverternonlinearity
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